Details

Autor(en) / Beteiligte

• 徐海珣 赵善宇 郑猛 贾佳佳 朱平华

Titel

Photocatalytic and Thermal Insulating Performances of Fiber Reinforced Hierarchical TiO_2/SiO_2 Xerogel Composites Synthesized by Ambient Drying Route

Ist Teil von

• 东华大学学报：英文版, 2017, Vol.34 (4), p.570-576

Erscheinungsjahr

2017

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Silica（ SiO2） based aerogel/xerogel materials have been received ever-growing attentions for versatile applications. However,the widespread applications are narrowed by the inert properties,fragile and brittle natureof silica materials and cumbersome preparation processes. In this paper,titania（ TiO2） was introduced into SiO2 matrix to form photocatalytic hybrid gels. The TiO2/SiO2 composites were then reinforced by the impregnation of various fibrillary reinforcements,such as glass,mullite mineral and ceramic fibers. The properties of the composites were studied systematically in terms of fiberstability,microstructure,chemical interaction and thermal conductivity. The final xerogel composites displayed improved monolithic geometry,satisfied thermal conductivity（0. 09-0. 25 W·m^-1·K^-1） and optimized photocatalytic performance（85% removal of model pollutant of methyl orange（ Mo））,which could be expected to be a feasible route to multi-functional building facades in the future.